jjhsphysics - Interactions

TUE 10/09
HW DUE: WebAssign was due.
DO NOW: Review Book p. 28 #7, 8, 9, 10
IN CLASS:

Review Book p. 28 #13 on WB
From edmunds.com: 2005 Porsche Boxster S 60 mph to 0 in 105 ft (27 m/s to 0 in 32 m) Find accel and time.
Handed back Lab 1.

WED 10/10
HW DUE: Lab 2: Ramp Lab
DO NOW: Define "Interaction"
IN CLASS:

1: Lab Practical: Falling Coffee Filters -- constant v or acceleration? How do you know?
1: Go over Fri quizzes.
Interaction Diagrams
Motion with and without net interaction.
Hovercraft and hoverpucks.

........

MON 10/15
HW DUE: None
DO NOW: None
IN CLASS:

Wrap up 4 fundamental interactions
Interactions and Motion
Balanced vs. Unbalanced Interactions
2 student cart demos: bowling ball catch, toss, 2 people ball toss, 1 vs. 1 identical student, 1 vs. 2 identical student.
When did motion change? When did it stay the same? Relation to interactions? Why different effects?

TUE 10/16
HW DUE: None
DO NOW: None
IN CLASS:

1 Interactions and Reciprocity
1 Strength of Interaction (Force in newtons) vs. Effect of Interaction (change in motion)
1 Dueling Force Probes Demo
2 Graviational Force Applet Activity
2 Worksheet problems: Vary M1, M2, d, what's F? (Back of Gravitional Model Sheet)

WED 10/17
HW DUE: WebAssign due last night, Falling Filter Lab due by 2:30
DO NOW: Review Book p. (69, 70, 71)
IN CLASS:

Gravitational Model Notes
Discussion of form of general model
Calculate G from activity data
Plot activity data to determine shape for force vs. distance graph.
WB: Calculate Fg for 2 books 1 m apart. (1E-10 N)
WB: Calculate Fg for 1 book and earth. (12 N). Compare to previous. Check by hanging book from spring scale!
Review Book q'ns on universal gravitation.

THU 10/18
HW DUE: None
DO NOW: Review Book p. 47 (114,115,116) -- Weight!
IN CLASS:

FRI 10/19
HW DUE: Study for Quiz
DO NONE: Clear desk for quiz
IN CLASS:

MON 10/22
HW DUE: Start WA 07: Gravitational/Electrical Interactions
DO NOW:
IN CLASS:

1: WB All 3 worksheet problems on Electrical Interactions (ex: Calc Fg and Fe for two protons in the nucleus (d = 1E-15m). Compare. Evidence for strong nuclear interaction, #3 is a warm-up for the lab next period.)
2: LAB PRACTICAL: Charge on a Tape: Determine the magnitude of the charge on a piece of scotch tape. Works well with repulsive tapes, each student holds a tape and a third measures the distance. Students should repeat distance measurements.

TUE 10/23
HW DUE:
DO NOW:
IN CLASS:

Damage Control: Kids need to accelerate ride-on carts with bathroom scales, keeping the reading on the scale constant (20 lbs). Two carts in the hallway (helmets!). Kids trade places, important kinestetic activity. In class, two opposing magnets on one lab cart. BIG IDEA: The only way to predict the motion of an object is to determine if the interactions are balanced or unbalanced.

WED 10/24
HW DUE:
DO NOW:
IN CLASS:

1 Recap Balanced/Unbalanced and motion. Do ride-on cart demo with students who were absent. Fill out worksheet.
1 Go over quizzes ... quiz folders created
2 Vector Treasure hunt

THU 10/25
HW DUE:
DO NOW:
IN CLASS:

Discuss treasure hunt, vector addition graphical method, head-to-tail, properties of vectors

FRI 10/25
HW DUE:
DO NOW:
IN CLASS:

MON 10/29
HW DUE:
DO NOW:
IN CLASS:

Finish power point activity (next year trim # of slides!, ones at the end don't matter much)

TUES 10/30
HW DUE: Vectors in Manhattan worksheet, Charge on a Tape Lab.
DO NOW: #3 from worksheet on whiteboard
IN CLASS:

1: Discuss components as extension of Manhattan worksheet. Addition of vector components is same as addition of original vectors.
1: Use of coordinate pair notation <x,y> for vectors and equivalent magnitude w/ direction notation.
2: Force Vector equilibrium lab.